What are some alternatives?
When comparing Retrowave Illustration Pack and Open Peeps, you can also consider the following products
Stubborn Illustrations - 30 little exciting stories from the startup world
Humaaans - Mix-&-match illustrations of humans with a design library.
Stories by Freepik - Awesome illustrations for your next project
Avataaars - Mix and match avatars with a Sketch library
Atlassian Design - Design, develop, and deliver
Control Illustrations - 108 free flat illustrations with customizable characters